/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlet;

import action.ActionInterface;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Properties;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Egar
 */
@WebServlet(name = "controllerServlet", urlPatterns = {"/controller"})
public class ControllerServlet extends HttpServlet {
    Properties props = null;
    RequestDispatcher dis = null;
    public void init (ServletConfig config) throws
    ServletException{
        try {
            props = new Properties();
            InputStream in = this.getClass().getClassLoader().getResourceAsStream("conf.properties");
            props.load(in);
        } catch (Exception e){
            System.out.println("Gagal Loading File");
        }
    }
    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String urlPath = request.getParameter("action");
        String reqHelperClassName= (String)props.get(urlPath);
        
        if (reqHelperClassName != null) {
            try {
                action.ActionInterface helper = (ActionInterface)
                        Class.forName(reqHelperClassName).newInstance();
                        String nextView = helper.execute(request);
                        if (!nextView.contains("controller")){
                            nextView = "/WEB-INF/page" + nextView;
                        }
                        dis = request.getRequestDispatcher(nextView);
                        dis.forward(request, response);
            }catch (Exception x){
                System.out.println(x);
            }
        }
        
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet controllerServlet</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet controllerServlet at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    private Object getclass() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
}
